package com.kairos.jetparksample.ui.fragment

import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.fragment.app.Fragment
import androidx.fragment.app.activityViewModels
import androidx.fragment.app.viewModels
import androidx.lifecycle.SavedStateViewModelFactory
import com.kairos.jetparksample.R
import com.kairos.jetparksample.domain.ViewModelSample

// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private const val ARG_PARAM1 = "param1"
private const val ARG_PARAM2 = "param2"

/**
 * A simple [Fragment] subclass.
 * Use the [AFragment.newInstance] factory method to
 * create an instance of this fragment.
 */
class AFragment : Fragment() {
    // TODO: Rename and change types of parameters
    private var param1: String? = null
    private var param2: String? = null

    //ViewModelSample的作用域为当前Fragment
    private val viewModel: ViewModelSample by viewModels()

    //如果当前的Fragment依附于MainActivity，那么。viewModel2的作用域为MainActivity
    private val viewModel2: ViewModelSample by viewModels(ownerProducer = {requireActivity()})

    //更简化的写法，等同于viewModel2的获取
    val viewModel3: ViewModelSample by activityViewModels()

    //fragment传参数
    private val viewModel4: ViewModelSample by viewModels {
        SavedStateViewModelFactory(
            requireActivity().application,
            requireActivity(),
            arguments// 将arguments作为默认参数传递给 SavedStateHandler
        )
    }


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        arguments?.let {
            param1 = it.getString(ARG_PARAM1)
            param2 = it.getString(ARG_PARAM2)
        }
    }

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_a, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        //发送
        viewModel2.requestSampleData()
    }

    companion object {
        /**
         * Use this factory method to create a new instance of
         * this fragment using the provided parameters.
         *
         * @param param1 Parameter 1.
         * @param param2 Parameter 2.
         * @return A new instance of fragment AFragment.
         */
        // TODO: Rename and change types and number of parameters
        @JvmStatic
        fun newInstance(param1: String, param2: String) =
            AFragment().apply {
                arguments = Bundle().apply {
                    putString(ARG_PARAM1, param1)
                    putString(ARG_PARAM2, param2)
                }
            }
    }
}